Low Level Radiation Campaign
The Low Level Radiation Campaign is a Non-Government Organisation based in the United Kingdom. It is constituted as a Company Limited by Guarantee, the British equivalent of a "Not for profit" organisation.
The Campaign claims that the degree of health hazard from some kinds of radioactivity when they are inside the body has been substantially under-estimated. There are two basic aspects to this claim. One is that risk estimates advised by organisations such as the International Commission on Radiological Protection (ICRP) are derived from studies of external radiation. External irradiation, from X-rays or the flash of a nuclear explosion, results in an even distribution of energy, but some kinds of internal contamination deposit all the energy from their radioactive decays into very small volumes of tissue. This inevitably results in very large inequalities of energy density.
The second main contention of the LLRC is that many epidemiological studies show health effects far greater than can be explained by the opinions of the ICRP. Examples are the cluster of childhood leukemia in the village of Seascale, near the Sellafield nuclear reprocessing plant in Cumbria, UK, the sharp increase in infant leukemia after the Chernobyl accident in 1986, and a large volume of reports of cancer and other health effects in the territories affected by Chernobyl. Conventional risk agencies usually claim that such phenomena cannot be caused by radiation because the ICRP risk estimates do not predict them.